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简介:
Unit 1
1.sing (v.) → singer (n.)→ sang (过去式)
2.swim (v.) → swimmer (n.)→ swimming (现在分词)
→ swam (过去式)
3.dance (v.) → dancer (n.) → dancing (现在分词)
4.draw (v.) → drew (过去式)
5.speak(v.) → spoke (过去式)
6.tell(v.) → told (过去式)
7.story(n.) → stories (复数)
8.write(v.) → writer (n.)→ wrote (过去式)
9.piano(n.) → pianist (n.)
10.violin(n.) → violinist (n.)
11.make(v.) → making (现在分词) → made (过去式)
12.teach(v.) → teacher (n.) → taught (过去式)
13.music(n.) → musician (n.)